Magnetic and ultrasonic investigations on magnetite nanofluids

M Nabeel Rashin; J Hemalatha

doi:10.1016/j.ultras.2012.08.005

Magnetic and ultrasonic investigations on magnetite nanofluids

Ultrasonics. 2012 Dec;52(8):1024-9. doi: 10.1016/j.ultras.2012.08.005. Epub 2012 Aug 11.

Authors

M Nabeel Rashin¹, J Hemalatha

Affiliation

¹ Advanced Materials Lab, Department of Physics, National Institute of Technology, Tiruchirappalli, Tamilnadu 620 015, India.

PMID: 22939116
DOI: 10.1016/j.ultras.2012.08.005

Abstract

Magnetite nanofluids of various concentrations have been prepared through co-precipitation method. The structural and magnetic properties of the magnetic nanofluids have been analyzed which respectively revealed their face centered cubic crystal structure and super paramagnetic behavior. Ultrasonic investigations have been made for the nanofluids at different temperatures and magnetic fields. Open- and close-packed water structure is considered to explain the temperature effects. The inter particle interactions of surface modified nanomagnetite particle and the cluster formation are realized through the variations in ultrasonic parameters.